Chrome: Grooveshark Enhancement Suite makes Grooveshark even easier to use by removing duplicate tracks in your library, adding keyboard shortcuts and commands to let you quickly control playback and volume, and adding lyrics to all of your songs.

Grooveshark may be your favorite streaming music service (and one of ours too,) but one of the problems with it is that it's too easy to add duplicate songs to your library when searching for songs to listen to. Grooveshark Enhancement Suite will automatically remove those duplicates. You can also enable keyboard shortcuts for volume, next/previous, mute, display lyrics for the current song, and more. The extension is free, and works anywhere Chrome does.